After I installed windows 8 on 64bit, nothing worked unless I used this program: [url]http://www.vimicro.com/english/product/ChipTypedetector.zip[/url] . This will tell you what driver to use. Or you can manually try the drivers from the same page: [url]http://www.vimicro.com/english/product/pc003.htm[/url] . Good luck!